Rolls for rolling z-shaped slot-rails



(No Model.) 2 Sheets-Sheet 1.

F. GOLLEY. ROLLS FOR ROLLING Z SHAPED SLO T RAILS. No. 401,693. PatentedApr. 16, 1889.

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.(No Model.) 2 Sheets-Sheet 2.

F. OOLLEY. ROLLS FOR ROLLING Z-SHAPED SLOT RAILS.

No. 401,693. Patented Apr 16, 1889.

ZgQZ mJm [72 min" UNITED STATES PATENT OFFICE.

FREDERICK COLLEY, OF JOHNSTOVVN, PENNSYLVANIA, ASSIGNOR TO THE JOHNSONSTEEL STREET RAIL COMPANY, OF KENTUCKY.

ROLLS FOR ROLLING Z-SHAPED SLOT-RAILS.

SPECIFICATION forming part of Letters Patent No. 401,693, dated April16, 1889. Application filed November 16, 1888- Serial No. 290,988. (Nomodel.)

To all whom it may concern:

Be it known that I, FREDERICK CoLLEY, of Johnstown, in the county ofCambria and State of Pennsylvania, have invented a new and usefulImprovement in Rolls for Rolling Z-Shaped Slot-Rails, which invention isfully set forth and illustrated in the following specification andaccompanying drawings.

The object of this invention is sufficiently expressed in its title.

The invention will firstbe described in detail in the specification, andthen particularly set forth in the claim.

In the accompanying drawings, Figure 1 illustrates, in front elevation,a pair of forming or roughing rolls. Fig. 2 illustrates, also in frontelevation, a pair of finishing-rolls. In Fig. 1 the top roll isindicated by the letter A, and the bottom roll by the letter a. In Fig.2 the top roll is indicated by the letter B, and the bottom roll by theletter Z).

In said figures the several parts to be de scribed are indicated byletters and numbers of reference, as follows: The passes in said rollsare indicated, consecutively, by the numbers 1 to 8, inclusive, pass No.8 giving the shape of rail of the finished section desired.

In operating these rolls a bloom of hot metal, of ordinary form, isentered diagonally into pass No. 1, the principal reduction of metaleffected in said pass being effected at the points 0 c, which points arelocated opposite to each other on a line parallel to the plane of thesides 0 C. The bloom is then quarter-turned for entering into pass N o.2, wherein the same reducing action is continued, excepting that theamount of work put upon the mass of metal by the tongue ("Z is greaterthan that put upon the same by the opposing tongue D, the tendency totwist of metal being kept within bounds by the large draft at the points6 e. The rolled metal is again quarter-turned into pass No. 3, whereinthe draft of the various portions of the pass is more uniformlydistributed over the mass v of metal. 111 passes Nos. l, 5, and 6 themetal is also quarter-turned each time, after which it is rolledcontinuously without further turning through passes Nos. 6 and 7 andinto the finishing-pass N o. 8. Throughout all the passes from Nos. 4 to8, inclusive, the excessive work of the head portion of the metal F iscounterbalanced and the proper flow of metal maintained by making thedraft on the extreme portion of the lower flange (marked G) excessive inproportion to the section or mass of this lower flange as compared withthe draft on the web portion f, this portion being treated as a neutralzone.

I do not limit myself to the exact number or distribution of passesshown, as the number of passes and their distribution into roughing andfinishing passes is, to a certain extent, arbitrary, being influenced bythe length and diameter of the rolls,a light train of rolls calling formore passes of lighter draft than a heavy roll-train. It is also evidentthat the rolls can, if desired, be made three high instead of two-high,as shown in the drawings.

Having thus fully described my said improvement, as of my invention Iclaim Rolls for rolling Z-shaped slot-rails provided' wit-h passeshaving conformations substantially of the forms described, for the pur-.75 poses set forth.

FRED. COLLEY.

Witnesses:

A. MONTGOMERY, XV. MCLAIN.

